Polishing device for rolls.



PATENTED SEPT. 25, 1906.

A. RIDD. POLISHING DEVICE FOR ROLLS.

APPLIGATION FILED SEPT. 21, 1905.

Inventon Attorneys n in 2 time FQLlSHliGG @EJEGE FUR FSULLS= Specification of Letters Patent.

Patented Sept. 25, 1998.

Application filed September 21, 1905. Serial ll'o. 279,533-

To ail whom, it may concern:

Be it known that l, Annnosn Run), a citizen of the United States, residing at Newport, in the county of Campbell and State of Kentucky, have invented a new and useful Polisl g Device for Rolls, of which the fol lowing is a specification.

This invention relates to metal-rolling mills, and particularly to mills for rolling sheet metal where it is desirable to keep the surfaces of the rolls absolutely clean and free from foreign substance, such as particles of dirt or OXld, which might cling to the rollingsurfaces and mar the surface of the passing sheet.

The principal object of the invention is to provide a means for keeping the surface of the mold perfectly clean, smooth, and polished.

A further object of the invention is to pro vide a polishing device to be applied to aroll throughout the rolling operation.

A still further object of the invention is to provide a novel form of polishing device and to provide a novel means for holding such polishing device against the surface of the roll or rolls.

i Vith these and other objects in view, as will more fully hereinafter appear, the invention consists in certain novel features of construction and arrangement of parts, hereinafter fully described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that various changes in the form proportions, size, and minor details of the structure may be made Without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawings, Figure 1 is an elevation of a pair of rolls provided with cleaning and polishing devices constructed in accordance with the invention, the front housing being removed. Fig. 2 is a vertical section of one of the polishing devices, drawn to an enlarged scale. Fig. 3 is a detail sectional view of a portion of a modified construction of polishing device.

Similar characters of reference are employed to indicate corresponding parts throughout the several figures of the drawings.

In some classes of metal rolling, particularly on sheet-metal mills, it is necessary to stop the rolling operation atintervals and burnish the rolls.

Perfect rolling can be accomplished only with clean rolls, and any particles of dirt or oxid scale that may cling to therollswill be embeddedin the sheets,materially detracting from the appearance and the value of the sheets. In carrying out the present invention a cleaning and polishing device is applied to each of the rolls and'ds held against such roll during the entire rolling operation, or provision may be made for applying it only at intervals.

The rolls A and housing B illustrate a con ventional form of mill.

The housings are provided with supports 10 for a transversely-extending casing 1 1, that is provided with upper and lower flanges 12, and the rear face of the casing is connected by a tube 13 to a source of fluid-pressure supply, preferably steam.

The flanges 12 serve as supports for the polishing device 14., which is preferably formed of a material which will withstand high temperature without injury, asbestos or a compound containing asbestos being preferably employed, and in order to hold the asbestos in place it may be interwoven with or otherwise supported by layers .15 of wiregauze or netting. This polishing member has a backing-plate 16, preferably formed of flexible metal, and the central portion of the plate is of much thinner gage than the end portions, the ends being preferably heavy and unyielding and being provided with rearwardly-extending flanges 17, between which and the flanges 12 are arranged packingstrips 18, that will prevent the escape of the fluid.

In operation the fluid, preferably steam, is admitted through the pipe 13, and the interior of the casing 11 constitutes a pressure-cylinder, the plate 16 forming a piston or diaphragm that is pressed outward by the steam,- and as the central portion of this plate is thinner and more elastic thanthe' edge portion said central portion will bend or bulge in the direction of the roll and the cleansing or polishing pad 14 will be held firmly against the surface of the roll.

The rolls are usually heated, and it is therefore preferred to employ asbestos or some similar substance for the cleansing or olishing pad, this material being capable o withstanding high temperature Without injury,, and it is also preferred to employ steam as the forcing or pressing agent, the steam bemg also at a high temperature and being usually convenientin a mill. 7 In some cases,

however, air or a liquid under pressure may be utilized, and springs may also be employed as a substitute for the fluid;

In the construction shown in Fig. 3 the upper and lower edges of the cleaning and polishing pad are firmly secured to the edge flanges 12 of the casing, sothat the central portion only will bulge outward.

I With a device constructed in accordance with this invention the surface of the rolls may be kept perfectly smooth and clean, and the resultant sheets will be of more uniform character, and their surfaces will be free from indentations and imperfections which result from the clinging of particles of oxid scale or dirt to the rolling-surface.

Having thus described the invention, what is claimed is 1. A cleaning device for use in connection with rolling-mill rolls in situ, comprising a cleaning or polishing pad, and a fluid-pressure means for forcing the same into contact with the roll.

2. A cleaning device for use in connection with rolling-mill rolls'in sit u, comprising a polishing-pad of a lengthapproximately equal to that of the roll and having a concaved face, and a fluid-pressure means for 'ing a backing therefor, a casing in which said plate is arranged, and means for admitting a fluid under pressure to said casing.

4. A roll-polishing pad formed of a yieldable material, a backing-plate for the pad, said plate being thinnest at the center, and gradually thickening toward .its opposite edges, a cylinder-like casing having upper and lower flanges for the support of the plate and pad, and means for admitting a fluid under pressure to the interior of said casing.

In testimony that I claim the foregoing as my own I have hereto aflixed my signature inthe presence of two Witnesses.

' AMBROSE RIDD.

Witnesses:

JNo. C. DE Moss, FRED B. BAssMANN. 

